Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders’ Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Redeemable convertible preferred stock, beginning balance (in shares) at Dec. 31, 2020	85,391,338
Redeemable convertible preferred stock, beginning balance at Dec. 31, 2020	$ 274,104
Increase (Decrease) in Temporary Equity [Roll Forward]
Exercise of Series A-1 redeemable convertible preferred stock warrants (in shares)	12,595
Exercise of Series A-1 redeemable convertible preferred stock warrants	$ 163
Redeemable convertible preferred stock, ending balance balance (in shares) at Sep. 30, 2021	85,403,933
Redeemable convertible preferred stock, ending balance at Sep. 30, 2021	$ 274,267
Beginning balance (in shares) at Dec. 31, 2020		35,627,503
Beginning balance at Dec. 31, 2020	(260,685)	$ 0	$ 117,818	$ 0	$ (378,503)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	24,511		24,511
Exercise of stock options (in shares)		2,312,423
Exercise of stock options	8,008		8,008
Vesting of restricted stock units (in shares)		61,300
Net loss	(38,642)				(38,642)
Ending balance (in shares) at Sep. 30, 2021		38,001,226
Ending balance at Sep. 30, 2021	$ (266,808)	$ 0	150,337	0	(417,145)
Redeemable convertible preferred stock, beginning balance (in shares) at Jun. 30, 2021	85,403,933
Redeemable convertible preferred stock, beginning balance at Jun. 30, 2021	$ 274,267
Redeemable convertible preferred stock, ending balance balance (in shares) at Sep. 30, 2021	85,403,933
Redeemable convertible preferred stock, ending balance at Sep. 30, 2021	$ 274,267
Beginning balance (in shares) at Jun. 30, 2021		37,523,533
Beginning balance at Jun. 30, 2021	(266,771)	$ 0	141,112	0	(407,883)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	7,578		7,578
Exercise of stock options (in shares)		416,393
Exercise of stock options	1,647		1,647
Vesting of restricted stock units (in shares)		61,300
Net loss	(9,262)				(9,262)
Ending balance (in shares) at Sep. 30, 2021		38,001,226
Ending balance at Sep. 30, 2021	$ (266,808)	$ 0	150,337	0	(417,145)
Redeemable convertible preferred stock, beginning balance (in shares) at Dec. 31, 2021	0
Redeemable convertible preferred stock, beginning balance at Dec. 31, 2021	$ 0
Redeemable convertible preferred stock, ending balance balance (in shares) at Sep. 30, 2022	0
Redeemable convertible preferred stock, ending balance at Sep. 30, 2022	$ 0
Beginning balance (in shares) at Dec. 31, 2021		139,164,693
Beginning balance at Dec. 31, 2021	389,700	$ 1	848,229	(1)	(458,529)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	57,457		57,457
Exercise of stock options (in shares)		1,273,968
Exercise of stock options	5,653		5,653
Vesting of restricted stock units (in shares)		294,759
Vesting of restricted stock units	67		67
Reclassification of stock appreciation rights	62		62
Other comprehensive loss	(264)			(264)
Issuances of common stock under employee stock purchase plan (in shares)		526,754
Reclassification of stock appreciation rights	5,563		5,563
Net loss	(101,722)				(101,722)
Ending balance (in shares) at Sep. 30, 2022		141,260,174
Ending balance at Sep. 30, 2022	$ 356,516	$ 1	917,031	(265)	(560,251)
Redeemable convertible preferred stock, beginning balance (in shares) at Jun. 30, 2022	0
Redeemable convertible preferred stock, beginning balance at Jun. 30, 2022	$ 0
Redeemable convertible preferred stock, ending balance balance (in shares) at Sep. 30, 2022	0
Redeemable convertible preferred stock, ending balance at Sep. 30, 2022	$ 0
Beginning balance (in shares) at Jun. 30, 2022		140,622,937
Beginning balance at Jun. 30, 2022	374,946	$ 1	888,522	(19)	(513,558)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	26,428		26,428
Exercise of stock options (in shares)		427,684
Exercise of stock options	2,019		2,019
Vesting of restricted stock units (in shares)		209,553
Vesting of restricted stock units	0
Reclassification of stock appreciation rights	62		62
Other comprehensive loss	(246)			(246)
Net loss	(46,693)				(46,693)
Ending balance (in shares) at Sep. 30, 2022		141,260,174
Ending balance at Sep. 30, 2022	$ 356,516	$ 1	$ 917,031	$ (265)	$ (560,251)